OB1 Anthracite Multi-Surface Construction Sealant & Adhesive
Versatile OB1 sealant bonds metals, wood & more underwater. Food-safe, solvent-free, and weatherproof for marine, roofing & DIY repairs.
OB1® Anthracite Multi-Surface Construction Sealant & Adhesive is a high-performance hybrid-polymer solution designed for versatile applications in construction, marine environments, and industrial settings. Its solvent-free and VOC-free formula ensures safety and durability while providing robust adhesion across diverse materials.
Applications
- Bonds metals (including aluminium and lead), plastics (PVC, GRP), glass, wood, fibreglass, and more—even underwater.
- Ideal for marine and swimming pool repairs (resistant to saltwater).
- Food-safe (ISEGA-certified) for kitchen worktops, sealing marble, granite, and quartz without staining.
- Structural adhesive for carbon fibre, fibreglass, and GRP repairs under vibration.
- Effective sealant for solar panels, preventing shrinkage due to its solvent-free composition.
- Secures mirrors without degradation, eliminating the need for additional fixings.
- Superior bathroom sealant—prevents mould with zero VOC and non-shrinking properties.
- Reliable for lead flashing installations on roofs, even in wet conditions.
- Repairs leaking gutters without requiring a dry surface—adheres permanently without cracking.
- Garden repair solution for terracotta, concrete, slate, and pond ornaments underwater.
Key Benefits
- Exceptional Flexibility: Elongates up to 350%, accommodating material movement (-40°C to +120°C).
- Weather & Chemical Resistant: Withstands harsh conditions, including UV exposure and saltwater.
- Odourless & Environmentally Compliant: A+ air-quality rating, safe for residential and industrial use.
- Paintable & Non-Shrinking: Maintains integrity over time without cracking or collapsing.
Free 24 Hour Delivery*
259 shoppers already locked free delivery today
Save on courier fees worth £6.99
- Marine & pool sealing
- Kitchen worktops
- Solar panel installation
- Mirror fixing
- Material: Hybrid polymer
- Colour: Anthracite
- VOC Content: Zero
- Temperature Range: -40°C to +120°C
- Elongation: Up to 350%
- Certification: ISEGA (food-safe)
- Chemical Resistance: Excellent
- Fungal Growth Resistance: Yes
- Paintable: Yes
- Weight: 509g
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
View Full Delivery & Returns PolicySecure Transactions
We take the utmost care with your payment and personal details. Our website employs advanced encryption technology, including Secure Sockets Layer (SSL), to protect your information during transmission. You can verify a secure connection by looking for 'https' and a locked padlock in your browser.
Cookie Policy
Cookies enhance your shopping experience by keeping track of your basket and remembering you when you return. We also use banner advertising based on your browsing history to present products of potential interest.
Security Warning
Beware of phishing scams! We will never ask for personal details via email. If such information is required, we'll request you to contact us by phone. If you receive an email requesting sensitive information, do not respond and let us know immediately.
